#!/usr/bin/python
# coding:utf-8
# auther:DT
# 2017-08-13_15-57-17
a = [1,2,2,3,5,5]
print(a)
target = int(input("请输入你想查找的数"))
try:
    c = a.index(target)
    print(target,"出现的位置",c)
except:
    print("你输入的数字有误:-1")
